Llanelli Weather in December

Llanelli in December averages 10°C (50°F) during the day and 5°C (41°F) at night. This is part of the winter season, and quite a bit of rainfall is expected this month.

Rainfall in Llanelli in December

You can expect rain on around 20 days based on historical patterns, with 151 mm (5.9 in) average for the month. This month brings frequent, heavy showers. Both the number of wet days and the rainfall totals are on the high side.

Temperature in Llanelli in December

In December, Llanelli sees low temperatures, with highs of 10°C (50°F). Nights drop to around 5°C (41°F). During December, the winter season is in full swing. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. With lows around 5°C (41°F), nights are cold. The upside is that cool, crisp nights are often the best for a deep sleep.

Sunshine in Llanelli in December

The month is characterized by fewer sunny days, with roughly 49 hours hours of sunshine. Ideal for those who prefer a cooler, cloudier climate.

If you're looking for dry conditions and comfortable temperatures, December may not be the ideal month to visit Llanelli. Our weather planner can help you explore destinations with more pleasant weather conditions.